<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>4-交集选择器</title>
		<style type="text/css">
			ul li>a{
				font-size:16px;
				color: #FF0000;
			}
			ul li a.cur{
				font-size:20px;
				color: blue;
			}
		</style>
	</head>
	<body>
		<ul>
			<li><a href="">百度</a></li>
			<li><a href="" class="cur">百度</a></li>
			<li><a href="">百度</a></li>
		</ul>
	</body>
</html>
